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E.g., 12/07/2016
E.g., 12/07/2016
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  • News in Brief

    Having an extra chromosome has a surprising effect on cancer

    SAN FRANCISCO — Having an extra chromosome may suppress cancer, as long as things don’t get stressful, a new study suggests. The finding may help scientists unravel a paradox: Cells with extra chromosomes grow slower than cells with the usual two copies of each chromosome, but cancer cells, which grow quickly, often have additional chromosomes. Researchers have thought that perhaps extra...

    12/07/2016 - 16:31 Cells, Cancer, Genetics
  • News

    Losing tropical forest might raise risks of human skin ulcers, deformed bones

    Clearing tropical forests may raise the risk of people being exposed to a gruesome disease called Buruli ulcer, a new study suggests.

    Mycobacterium ulcerans, the bacteria that cause Buruli skin lesions and bone deformities, can thrive in a wide range of wild creatures, especially tiny insects grazing on freshwater algae, says Aaron Morris, now at Imperial College London. Surveying more...

    12/07/2016 - 14:00 Ecology, Biomedicine, Conservation
  • News

    Brain waves show promise against Alzheimer’s protein in mice

    Flickering light kicks off brain waves that clean a protein related to Alzheimer’s disease out of mice’s brains, a new study shows. The results, described online December 7 in Nature, suggest a fundamentally new approach to counteracting Alzheimer’s.

    Many potential therapies involve drugs that target amyloid-beta, the sticky protein that accumulates in the brains of Alzheimer’s patients...

    12/07/2016 - 13:00 Neuroscience, Health
  • Wild Things

    Why a mountain goat is a better climber than you

    The mountain goat (Oreamnos americanus) might be the world’s best climber, able to scale near-vertical cliffs with an ease rivaled only by the world’s best human rock climbers — who have the advantage of safety equipment and opposable thumbs. Just how the goats manage such climbs has been somewhat of a mystery. Researchers suspected that the big muscles in the animals’ neck and shoulders and...

    12/07/2016 - 12:21 Animals
  • News

    Virtual reality raises real risk of motion sickness

    With virtual reality finally hitting the consumer market this year, VR headsets are bound to make their way onto a lot of holiday shopping lists. But new research suggests these gifts could also give some of their recipients motion sickness — especially if they’re women.

    In a test of people playing one virtual reality game using an Oculus Rift headset, more than half felt sick within 15...

    12/06/2016 - 15:21 Science & Society, Health
  • News

    Zippy new jumping bot catches air again and again

    View the video

    Meet the robot that can do parkour.

    Salto, a lightweight bot that stands on one skinny leg like a flamingo, can leap from floor to wall, then off again — like parkour athletes bouncing between buildings, researchers from the University of California, Berkeley report December 6 in Science Robotics.

    Salto’s not the highest jumping robot out there, but it’s got...

    12/06/2016 - 14:00 Robotics, Technology
  • Science Ticker

    Solar panels are poised to be truly green

    The solar panel industry has nearly paid its climate debt. The technology will break even in terms of energy usage by 2017 and greenhouse gas emissions by 2018 at the latest, if it hasn’t done so already, researchers calculate.

    Building, assembling and installing solar panels consumes energy and produces climate-warming greenhouse gases. Once in use, though, the panels gradually reverse...

    12/06/2016 - 11:00 Climate, Oceans
  • Growth Curve

    Database provides a rare peek at a human embryo’s first weeks

    When I first found out my daughter existed, she was about half the size of a mini chocolate chip.

    I was six weeks pregnant; she was four weeks into development. (The pregnancy timer officially begins two weeks before conception.) Already, the structures that would become her eyes had formed rudimentary orbs and the four tiny chambers of her heart were taking shape. At this stage of...

    12/06/2016 - 09:00 Human Development
  • News in Brief

    Cell distress chemicals help embryos quickly heal

    SAN FRANCISCO — Fruit fly embryos use a molecular distress signal to call for wound healing. Those signals — hyperreactive chemicals known as reactive oxygen species — cause embryos to assemble drawstring-like structures called purse strings that rapidly cinch wounds shut, healing without leaving a scar.

    Assembling purse strings is a newfound wound-healing role for reactive oxygen...

    12/06/2016 - 06:00 Cells
  • News in Brief

    Bird plus goggles equals new insight into flight physics

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    A bird in laser goggles has helped scientists discover a new phenomenon in the physics of flight.

    Swirling vortices appear in the flow of air that follows a bird’s wingbeat. But for slowly flying birds, these vortices were unexpectedly short-lived, researchers from Stanford University report December 6 in Bioinspiration and Biomimetics. The results could help scientists...

    12/05/2016 - 18:21 Biophysics